Philips MCD122 Service Manual page 9

2-2
Malfunction Follow Check Chart
No power
Check if the Power Cord
is connected
Y
No
Check the AC Replace a new
AC Cable
outlet
Y
Check if the Dc output
Replace a new
No
provided voltage
Power Board
(about 34.5V)
Y
Check if the Main No Replace a new
Board has provided one
voltage
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No sound Time/Clock does not work
Plug in the power cord
Adjust the volume
Y
Check if the speakers
Switch on the Timer
are connected correctly
Y
Reset the Time/Clock
Check if the USB or other
devices are connected
Y
No Replace a
Check if the USB or other
new one
devices are incompatible
Y
Check if there is voltage
supplied to the USB Board
Y
Check if the CPU IC No Replace the
has provided voltage
Main Board
2-2
No display
Check the files or folders in
USB or others devices has
not exceeded the certain limit
Check the data wire which
connected the Main Board,
if has provided voltage
No Replace the IC PT6311
Check if the VFD Board
/SC16311/CD16311
has provided voltage
Check if the Main Board No
Replace a new one
has provided voltage
No Replace the
Check if the CPU IC
Main Board
has provided voltage